MATLAB: How to create a list of files of the defined typ that are included in the folder

list

Hello,
I should use this code (see below) to create a list o files of the defined typ that are included in the folder. Unfortunately, I get an error. It is saying that my pathname is too long. What can I do?
function fileList= createFileList(typ, folder)
    fileCount =0;
    listofFiles={};
    folders=genpath(folder);
    folders=regexp([folders ';'],'(.*?);','tokens');
    for pathNr=1:size(folders,2)
        folder=cell2mat(folders{pathNr});
        if ~isempty(folder)
            files=dir(fullfile(folder,strcat('*.',typ)));
            if ~isempty(files)
                for fileNr=1:size(files,1)
                    fileCount=fileCount+1;
                    file=strcat(folder,'\',files(fileNr).name);
                    listofFiles{fileCount,1}=file;
                    
                end
            end
        end
    end
    fileList=listofFiles;
end

Best Answer

folder = '...';
typ = 'm';
T = sprintf('*.%s',typ);
G = genpath(folder);
F = regexp(G,'[^:]+','match');
C = cell(size(F));
for k = 1:numel(F)
    C{k} = dir(fullfile(F{k},T));
end
S = vertcat(C{:});
L = fullfile({S.folder},{S.name})
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